Sr. Mcconochie et al., INTERACTION EFFECTS FROM REVERSAL STUDIES OF SINGLE PARTICLES, Journal of magnetism and magnetic materials, 155(1-3), 1996, pp. 89-91
Interaction effects within particulate recording tapes have been inves
tigated by comparing single particle behaviour with measured tape bulk
properties. The particle systems were audio gamma-Fe2O3 and 8 mm MP v
ideo tapes plus CrO2 hand spreads. Interactions in the gamma-Fe2O3 and
CrO2 systems were negative and consistent with mean field behaviour.
However, the MP particle interactions were in the opposite sense, in c
ontradiction to the Henkel plots. A model for this behaviour involving
the creation of chains is suggested.